Power Factor Calculator

Calculate power factor, the ratio of real (useful) power to apparent power in an AC circuit, indicating how effectively electrical power is being used.

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Power Factor
0.8

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Formula

Power Factor = Real Power(W) / Apparent Power(VA)

Learn How This Works

Electrical Engineering Basics: Power Factor, Voltage Drop, and Wire Resistance

How power factor, voltage drop, and wire resistance together determine whether an electrical circuit is sized and configured correctly.

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